Some platforms (tested on mpc85xx, mpc86xx) use global data before calling function baord_inti_f(). The data should not be cleared later. Any arch which uses global data in generic board board_init_f() should define CONFIG_SYS_GENERIC_GLOBAL_DATA.

Signed-off-by: York Sun yorksun@freescale.com CC: Scott Wood scottwood@freescale.com CC: Simon Glass sjg@chromium.org CC: Albert ARIBAUD albert.u.boot@aribaud.net --- Change log

v5: Add sandbox to the list v4: Replace with CONFIG_SYS_GENERIC_GLOBAL_DATA, a positive logic v3: Introduce CONFIG_SYS_EARLY_GD instead of using a list v2: Instead of adding back gd init for all PPC, preserve gd for mpc85xx and mpc86xx.

README | 6 ++++++ arch/arc/include/asm/config.h | 2 ++ arch/arm/include/asm/config.h | 2 ++ arch/mips/include/asm/config.h | 2 ++ arch/sandbox/include/asm/config.h | 1 + common/board_f.c | 12 +++++++----- 6 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/README b/README index 12758dc..c66f988 100644 --- a/README +++ b/README @@ -440,6 +440,12 @@ The following options need to be configured: supported, core will start to execute uboot when wakes up.

- Generic CPU options: + CONFIG_SYS_GENERIC_GLOBAL_DATA + Defines global data is initialized in generic board board_init_f(). + If this macro is defined, global data is created and cleared in + generic board board_init_f(). Without this macro, architecture/board + should initialize global data before calling board_init_f(). + CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN

Defines the endianess of the CPU. Implementation of those diff --git a/arch/arc/include/asm/config.h b/arch/arc/include/asm/config.h index 5761def..3d331cc 100644 --- a/arch/arc/include/asm/config.h +++ b/arch/arc/include/asm/config.h @@ -7,6 +7,8 @@ #ifndef __ASM_ARC_CONFIG_H_ #define __ASM_ARC_CONFIG_H_

+#define CONFIG_SYS_GENERIC_GLOBAL_DATA + #define CONFIG_LMB

#endif /*__ASM_ARC_CONFIG_H_ */ diff --git a/arch/arm/include/asm/config.h b/arch/arm/include/asm/config.h index abf79e5..2a20a77 100644 --- a/arch/arm/include/asm/config.h +++ b/arch/arm/include/asm/config.h @@ -7,6 +7,8 @@ #ifndef _ASM_CONFIG_H_ #define _ASM_CONFIG_H_

+#define CONFIG_SYS_GENERIC_GLOBAL_DATA + #define CONFIG_LMB #define CONFIG_SYS_BOOT_RAMDISK_HIGH

diff --git a/arch/mips/include/asm/config.h b/arch/mips/include/asm/config.h index 3a891ba..1c8a42b 100644 --- a/arch/mips/include/asm/config.h +++ b/arch/mips/include/asm/config.h @@ -7,6 +7,8 @@ #ifndef _ASM_CONFIG_H_ #define _ASM_CONFIG_H_

+#define CONFIG_SYS_GENERIC_GLOBAL_DATA + #define CONFIG_LMB #define CONFIG_SYS_BOOT_RAMDISK_HIGH

diff --git a/arch/sandbox/include/asm/config.h b/arch/sandbox/include/asm/config.h index ec7729e..6c1bff9 100644 --- a/arch/sandbox/include/asm/config.h +++ b/arch/sandbox/include/asm/config.h @@ -7,6 +7,7 @@ #ifndef _ASM_CONFIG_H_ #define _ASM_CONFIG_H_

+#define CONFIG_SYS_GENERIC_GLOBAL_DATA #define CONFIG_SANDBOX_ARCH

/* Used by drivers/spi/sandbox_spi.c and arch/sandbox/include/asm/state.h */ diff --git a/common/board_f.c b/common/board_f.c index cbdf06f..7601a98 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -970,20 +970,22 @@ static init_fnc_t init_sequence_f[] = {

void board_init_f(ulong boot_flags) { -#ifndef CONFIG_X86 +#ifdef CONFIG_SYS_GENERIC_GLOBAL_DATA + /* + * For some archtectures, global data is initialized and used before + * calling this function. The data should be preserved. For others, + * CONFIG_SYS_GENERIC_GLOBAL_DATA should be defined and use the stack + * here to host global data until relocation. + */ gd_t data;

gd = &data; -#endif

/* * Clear global data before it is accessed at debug print * in initcall_run_list. Otherwise the debug print probably * get the wrong vaule of gd->have_console. */ -#if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \ - !defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \ - !defined(CONFIG_MPC86xx) && !defined(CONFIG_X86) zero_global_data(); #endif